Watch Water Resistant Classifications

Water resistance classification

Watches are often classified by watch manufacturers by their degree of water resistance which, due to the absence of official classification standards, roughly translates to the following (1 metre ≈ 3.29 feet).

Water resistance rating

Suitability

Remarks

Water Resistant 3 atm or 30 m

Suitable for everyday use. Splash/rain resistant. Not suitable for showering, bathing, swimming, snorkelling, water related work and fishing.

Not suitable for diving.

Water Resistant 5 atm or 50 m

Suitable for swimming, white water rafting, non-snorkeling water related work, and fishing.

Not suitable for diving.

Water Resistant 10 atm or 100 m

Suitable for recreational surfing, swimming, snorkeling, sailing and water sports.

Not suitable for diving.

Water Resistant 20 atm or 200 m

Suitable for professional marine activity, serious surface water sports and skin diving.